记录一下，Qt开源版开发环境安装程序，跳过账号登录的方法，参考自：
https://www.openguru.com/2021/03/install-qt-creator-without-qt-account.html
首先是要下载Qt离线安装程序，在这里：https://www.qt.io/offline-installers，然后安装时会发现还是需要登入账号，此时linux系系统可以设置无效proxy，如上面参考链接中提到的方法，而windows则可以通过禁用网络连接的方式跳过。
Qt
Xcode升级后导致原Qt项目构建失败的问题
原有使用Qt Creator 4.0.2创建的跨平台GUI项目，在近日Xcode升级至8.0后，出现了构建失败的问题，错误信息如下：
clang: warning: no such sysroot directory: ‘/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk’
In file included from ../FbxVertexMerger/main.cpp:1:
In file included from ../FbxVertexMerger/mainwindow.h:4:
In file included from ../../../../Qt5.7.0/5.7/clang_64/lib/QtWidgets.framework/Headers/QMainWindow:1:
In file included from ../../../../Qt5.7.0/5.7/clang_64/lib/QtWidgets.framework/Headers/qmainwindow.h:43:
In file included from /Users/wzkres/Qt5.7.0/5.7/clang_64/lib/QtWidgets.framework/Headers/qwidget.h:43:
In file included from /Users/wzkres/Qt5.7.0/5.7/clang_64/lib/QtGui.framework/Headers/qwindowdefs.h:43:
In file included from /Users/wzkres/Qt5.7.0/5.7/clang_64/lib/QtCore.framework/Headers/qglobal.h:81:
/Users/wzkres/Qt5.7.0/5.7/clang_64/lib/QtCore.framework/Headers/qsystemdetection.h:95:12: fatal error: ‘TargetConditionals.h’ file not found
# include <TargetConditionals.h>
显然，问题出在MacOSX10.11.sdk这个位置，升级后的MacOSX SDK变为了MacOSX10.12.sdk，那么如何让Qt使用新版本的SDK呢？很简单，修改Qt项目的.pro文件，加入 Continue reading…